The world’s greatest riders return to the grid this weekend for the opening race of the 2013 MotoGP season under the stunning floodlights at the Losail International Circuit for the Qatar Grand Prix (April 4-7).

With seven-time champion Valentino Rossi returning to Yamaha and fierce Spanish rivals Jorge Lorenzo and Dani Pedrosa going head-to-head, it promises to be the most competitive season in recent years.

BBC Sport and British Eurosport will have all the action from each of the 18 Grands Prix covered throughout the 2013 season.

David Addison has been confirmed as ITV Sport’s new lead commentator for its Dunlop MSA British Touring Car Championship coverage.

Addison will join former BTCC title winner and long-time series commentator Tim Harvey in the commentary box for all ten events this season, which will once again be broadcast live on ITV4 and ITV4 HD.

He replaces Toby Moody, who has returned full-time to his MotoGP commentaries with Eurosport after just single season with ITV, who in turn stepped in to replace Ben Edwards after his departure to the BBC F1 team in 2011.

After nine meetings and 27 races covering the length and breadth of the UK, the climax to a thrilling Dunlop MSA British Touring Car Championship takes place this weekend at Brands Hatch.

Scotland’s Gordon Shedden, two-time champion Jason Plato and triple title winner Matt Neal go into the finale with 31 points separating them at the top of the drivers’ championship, with 67 left to play for on Sunday, October 21.

ITV4 will have comprehensive coverage of the final meeting of the 2012 season, featuring rounds 28, 29 and 30 of the BTCC as well as a variety of exciting support races on a bumper afternoon a top-class British motorsport.

ITV will once again provide extensive coverage of the Dunlop MSA British Touring Car Championship season.

All ten BTCC race days throughout the year will receive up to seven hours of live coverage on ITV4, meaning fans will be able to see every second of the action from Britain’s biggest four-wheeled motor racing championship unfold as it happens.